Model Sedimentation Tank Vocational Training Equipment
....
The Sedimentation Tank allows to study the hydraulic and efficiency characteristics of the sedimentation by means of a special rectangular section tank. The unit is fitted with an ink injecting device in order to visualize the flow lines obtained in the settling tank. The sludge, which is kept in suspension in the preparation tank by a stirrer, is sent to the sedimentation tank by a variable speed peristaltic pump together with a water flow rate adjusted through a manual valve. The group is supplied with manuals which describe all parts of the unit, the installation and utilization procedures, as well as many exercises with the relative results.
....
For hydraulic tracer and visualization studies, an accurate dye injection system is provided. A known volume of dye solution is injected just before the entry to the settling tank.
Water is taken from the laboratory mains supply and is fed to the settling tank via a flow meter. For studies of sedimentation, a slurry is prepared in a sump tank and pumped via a specially designed flow meter to join the fresh water stream just before entry to the settling tank.
This may be comparatively analyzed by the Imhoff cone technique or more accurately by drying and weighing.The sump tank is continually agitated by a flow sparge device to prevent settling of solids during an experiment. A well-mixed slurry of known concentration and flow enters the tank uniformly under an inlet weir.
Tank with pump to prepare and deliver a suspension comprising water and precipitated calcium carbonate
Determination of solid concentrations at sedimentation tank inlet and outlet by Imhoff cones
Separation of suspensions by sedimentation in transparent sedimentation tank
Bypass to tumble and homogenise the suspension
Precise piston burette for metering of ink to visualise flow conditions in the sedimentation tank
Influencing of flow conditions in the sedimentation tank with baffle plate that can be positioned
Mixing of the suspension with fresh water in sedimentation tank inlet zone
Adjustment of fresh water and suspension flow rate by valves.
